JP2562178Y2 - Electromagnetic relay - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay which is suitable as a component for a vehicle electric component used for controlling a forward / reverse rotation of a DC motor and a forward / reverse drive of a plunger.

[0002]

2. Description of the Related Art In recent years, with the trend toward higher-grade automobiles, automatic operation mechanisms, such as automatic door locks and power windows, which have been conventionally operated by manual operation have been adopted. Such an automatic operation mechanism is driven by forward / reverse rotation of a DC motor or forward / reverse movement of a plunger, and two electromagnetic relays are generally used for its control circuit. That is, the control current output from the control circuit opens and closes the two electromagnetic relays, and switches the direction of the current flowing through the DC motor or the plunger by the opening / closing operation to open / close the door or the window.

[0003]

In order to meet the demands for lighter automobiles and smaller on-board equipment, such electrical equipment has also been reduced in size and automated. However, electromagnetic relays have been used as electrical parts. Since it is relatively large and bulky, it is difficult to automatically mount it on a substrate, and the assembly cost of the apparatus has been high. The present invention has been made in view of the above problems, and is an electromagnetic relay capable of performing assembly work easily and with high precision while integrating two electromagnetic relays to reduce the size and space. The purpose is to provide.

[0004]

According to the present invention, in order to solve the above-mentioned problems, the first means is to provide a bobbin in which a coil is wound around a spool portion in which an iron core is provided, a break fixed contact,
An electromagnetic relay including two fixedly movable electromagnetic units each including a fixed make contact, a movable contact positioned therebetween and fixed to a movable spring together with an armature, and a yoke for magnetically connecting the iron core and the armature. A common L-shaped break contact terminal and a make contact terminal, wherein the break fixed contact and the make fixed contact of the two electromagnetic units are common, and they are conductively fixed, respectively, and a bobbin of the first electromagnetic unit. The first electromagnetic unit has a terminal support portion that is provided integrally and supports the break contact terminal and the make contact terminal, respectively, and a fitting groove is provided on an upper surface of a base portion of a bobbin of the first electromagnetic unit. The bobbin of the two electromagnetic units is integrated by fitting the bobbin of the second electromagnetic unit provided separately from the first electromagnetic unit. So, the horizontal portion of the break contact terminals and the make contact terminal is that the are supported break contact terminals and the make contact terminals to each of the terminal supporting portion so as to face in parallel at predetermined intervals. The second means is the first means, wherein the terminal supporting portion has an iron core supporting member extending in the horizontal direction, and the iron core has a flange wide portion at an upper end thereof. And a through hole for inserting an iron core is provided, and an upper edge of the through hole is supported to support an upper end portion of the iron core.

[0005]

The coil is wound around the bobbin of the first electromagnetic unit, and the coil is similarly wound around the fitting groove of the base.
The bobbins of the two electromagnetic units are integrated by fitting the bobbins of the two electromagnetic units. The terminal supporting portion supports both terminals such that the horizontal portions of the break contact terminal and the make contact terminal face each other in parallel at a predetermined interval. The upper edge of the through hole of the iron core supporting member supports the upper end of the iron core inserted into the through hole.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIGS. 1, 2, 3 and 4 are front and plan views of an electromagnetic relay according to an embodiment of the present invention, respectively.
It is a side view and an exploded front view of the coil block.
In these figures, 1 is the primary bobbin, 4 is the secondary bobbin, 2
And 3 are conductive break contact terminals and make contact terminals formed in an L shape, respectively, and 5a and 5b are substantially L-shaped.
The conductive movable springs 11 and 11b formed in a V-shape are the base portions of the main bobbin 1 and the sub bobbin 4, respectively, 12a and
12b is a spool portion, 13 is a terminal support portion erected on the base portion 11 of the main bobbin, 24 and 34 are common break fixed contacts and make fixed contacts, respectively, 53a, 53b,
54a and 54b are movable contacts fixed to the movable springs 5a and 5b, 55a and 55b are amateurs similarly fixed to the movable springs 5a and 5b, and 6a and 6b are iron cores fitted into the main bobbin 1 and the sub bobbin 4, respectively. , 7a and 7b are L-shaped yokes for magnetically connecting the iron cores 6a and 6b and the armatures 55a and 55b, and 8a and 8b are spool portions 1
Coil wound on 2a, 12b, 9 is case, 81
Reference numerals a and 81b are connection terminals to which the extraction terminals of the coils 8a and 8b are connected. In addition, the characters a and b of the rear code correspond to the first and second electromagnetic units, respectively.

As shown in FIGS. 1 and 4, the electromagnetic relay is composed of three blocks and has two electromagnetic units a and b which are driven independently of each other. That is, each of the electromagnetic units a and b includes a contact block A, a coil block B, and a spring block C.
The contact block A is a break contact terminal 2 and a make contact terminal 3 having a common break fixed contact 24 and a make fixed contact 34 conductively fixed to the lower and upper surfaces of the respective terminal horizontal portions 21 and 31, and the coil block B is A main bobbin 1 having a pair of connection terminals 81a planted thereon, a sub bobbin 4 formed separately therefrom and having a pair of connection terminals 81b planted therein, and coils 8a and 8b wound therearound. The iron cores 6a, 6b, and the yokes 7a, 7b magnetically connected to the iron cores 6a, 6b, the spring block C has movable contacts 53a, 53b,
The movable springs 54a and 54b are respectively constituted by movable springs 5a and 5b to which conduction is fixed and armatures 55a and 55b fixed to the horizontal holes 51a and 51b. As described above, the terminal support portion 13, the break contact terminal 2, the make contact terminal 3, the break fixed contact 24, the make fixed contact 34, and the base portion 11 of the main bobbin 1 have two electromagnetic units a,
b. Terminal support portion 13 of coil block B,
Through holes 43a, 43b and 44a, 44b are formed in the base portion 11 in the vicinity of both front ends, respectively. The break contact terminal 2 and the make contact terminal 3 have the vertical portions 22, 32 formed by the through holes. Holes 43a, 43b, 4
4a and 44b are respectively inserted from above. And
The terminal horizontal portions 21 and 31 are supported on the upper surface of the terminal support portion 13 and the bottom surface of the concave portion 14 so that the terminal horizontal portions 21 and 31 are horizontally opposed to each other with a predetermined interval vertically. Therefore, the break fixed contact 24 and the make fixed contact 34 of the terminal horizontal portions 21 and 31 of the break contact terminal 2 and the make contact terminal 3 are also supported to face each other with a predetermined gap. The main bobbin 1 is provided with a through hole 19a in the spool portion 12a in the vertical direction, while the base portion 11 is provided with a square hole 15 extending horizontally from the rear. Similarly, the sub bobbin 4 is provided with a through hole 19 in the spool portion 12b in the vertical direction.
As for b, a concave groove 16 is provided in the front-back direction of the bottom of the base portion 11b. Square portions 15 and concave grooves 16 of the main bobbin 1 and the sub bobbin 4 are provided with horizontal portions 7 of the yokes 7a and 7b from behind.
1a and 71b are fitted and supported. Through holes 19a, 19b
The iron cores 6a, 6b are respectively fitted from above through the through holes 18a, 18b provided in the iron core support plate 17 extending horizontally rearward from the upper part of the terminal support portion 13. The lower ends 62a, 62b of the iron cores 6a, 6b are small diameter portions, are fitted into concave holes 73a, 73b formed in the horizontal portions 71a, 71b of the yokes 7a, 7b, and are magnetically coupled to each other.

As shown in FIG. 4, the coil block B is assembled by assembling a main bobbin 1 on which a coil 8a is wound on a spool portion 12a and a sub bobbin 4 on which a coil 8b is wound on a spool portion 12b. Along the fitting groove 10 formed from the central portion to the side on the upper surface of 11, it is fitted and fixed from the side outward. Next, the yokes 7a, 7b are fitted into and fixed to the square holes 15 and the concave grooves 16, respectively, from the rear. Thereafter, the iron cores 6a and 6b are connected to the spool portions 12a and 1b through the through holes 18a and 18b provided in the iron core support plate 17 as described above.
2b into the through holes 19a and 19b,
a and 62b are magnetically coupled to the yokes 7a and 7b. When the assembly of the coil block B is completed, the vertical portions 22 and 32 of the break contact terminal 2 and the make contact terminal 3 are connected to the through holes 43 a provided in the terminal support portion 13 and the base portion 11.
43b, 44a, and 44b are respectively inserted from above,
The terminal horizontal portions 21 and 31 are supported and fixed to the upper surface of the terminal support portion 13 and the bottom surface of the concave portion 14 thereof. After the assembly of the contact block A and the coil block B is completed, the assembly of the spring block C is performed. That is, the movable contacts 53a, 5
3b, 54a and 54b are respectively located between the common break fixed contact 24 and the make fixed contact 34 of the contact block A, and the upper movable contacts 53a and 53 when no power is supplied.
b presses against the separated positions of the break fixed contacts 24, and the bases of the movable springs 5a, 5b so that the non-contact side ends of the amateurs 55a, 55b contact the upper ends of the vertical portions 72a, 72b of the yokes 7a, 7b. Is the yoke 7a,
7b is fixed to the vertical portions 72a, 72b rear surface. After the contact block A, the coil block B and the spring block C are assembled and connected, they are housed in the case 9 to complete the electromagnetic relay.

As described above, the coil block B is assembled by fitting the sub bobbin 4 along the fitting groove 10 of the main bobbin 1 and fitting the yokes 7a and 7b into the square holes 15 and the concave grooves 16, and furthermore, the spring is assembled. The assembling of the block C is also completed only by the work of fastening the bases of the movable springs 5a, 5b to the vertical portions 72a, 72b of the yokes 7a, 7b.
The assembly work can be performed extremely simply and accurately. Also, the break contact terminal 2 and the make contact terminal 3
To the upper and lower through holes 43a, 43b, 44a, 44, respectively.
b, the horizontal portions 21 and 31 of the break contact terminal 2 and the make contact terminal 3 are supported on the upper surface of the terminal support portion 13 and the bottom surface of the concave portion 14, respectively. By appropriately setting the depth of 14, the gap between the fixed break contact 24 and the fixed make contact 34 can be defined, and when assembling the electromagnetic relay, troublesome adjustment of the inter-contact distance becomes unnecessary. Further, upper end portions 61a, 6b of the iron cores 6a, 6b.
1b is a flange wide portion, so that when the iron cores 6a, 6b are inserted into the through holes 18a, 18b provided in the iron core support plate 17, the upper end portions 61a, 61b become through holes of the iron core support plate 17. 18a, 18b are locked at the upper edges, so that the iron cores 6a, 6b
Is regulated to a certain height by the iron core supporting plate 17. The height of the iron core supporting plate 17 and the vertical portions 72a and 72b of the yokes 7a and 7b, and the horizontal portions 7 of the yokes 7a and 7b.
1a, 71b, the recessed holes 73a in the yokes 7a, 7b,
Since the position of 73b is kept constant according to the specification based on the design value, if the fixed position of the movable springs 5a, 5b on the back surfaces of the vertical portions 72a, 72b of the yokes 7a, 7b is set, the energization of the electromagnetic units a, b Iron cores 6a, 6 at the time of and at the time of de-energization
b at the upper ends 61a and 61b and the amateurs 54a and 54b
, The contact pressure between the movable contacts 54a, 54b and the fixed make contact 34, and the contact pressure between the movable contacts 53a, 53b and the fixed break contact 24 when power is not supplied are uniquely determined by the assembly of the electromagnetic relay. Stipulated,
This eliminates the need for any troublesome component position adjustment work or assembly dimension management when assembling the electromagnetic relay, and improves the dimensional accuracy of the assembled components.

[00010]

As described above, according to the first aspect of the present invention, the pobins of the two electromagnetic units are formed separately, and one of the pobins is fitted into the fitting groove provided on the upper surface of the other base. An L-shaped break contact terminal and a make contact terminal are provided on the one bobbin, respectively, in which the terminal horizontal portions in which the common break fixed contact and the make fixed contact are conductively fixed are opposed to each other in parallel. By supporting the terminal support, the electromagnetic relay can be assembled very easily, and the positional relationship between the parts is uniquely defined, so that when assembling, troublesome adjustment of the distance between contacts becomes unnecessary, The dimensional accuracy of assembled parts is improved. Further, according to the invention of claim 2, since the iron core supporting member extending in the upper horizontal direction of the terminal supporting portion has the through hole, the upper end portion is inserted into the through hole and the upper end portion is a flange wide portion. Since the iron core is supported by the upper edge of the through hole, troublesome iron core position adjustment work or assembly dimension management when assembling the electromagnetic relay becomes unnecessary.

[Brief description of the drawings]

FIG. 1 is a front view of an electromagnetic relay according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is an exploded front view of the coil block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main bobbin 2 Break contact terminal 3 Make contact terminal 4 Sub bobbin 5a, 5b Movable spring 6a, 6b Iron core 7a, 7b Yoke 8a, 8b Coil 9 Case 10 Fitting groove 11, 11b Base part 13 Terminal support part 14 Recess 17 Iron Core support plate 21, 31 Horizontal part 22, 32 Vertical part 24 Break fixed contact 34 Make fixed contact 43a, 43b, 44a, 44b Through hole 53a, 53b, 54a, 54b Movable contact

Claims (2)

(57) [Scope of request for utility model registration] 1. A bobbin in which a coil is wound around a spool portion in which an iron core is mounted, a break fixed contact, a make fixed contact, and a movable contact located between them and fixed to a movable spring together with an armature. And an electromagnetic relay having two individually drivable electromagnetic units each having a yoke for magnetically connecting the iron core and the armature, wherein a break fixed contact and a make fixed contact of the two electromagnetic units are shared, and they are electrically conductive. L that is fixed to each other
A break contact terminal and a make contact terminal,
A terminal support portion provided integrally with the bobbin of the electromagnetic unit and supporting the break contact terminal and the make contact terminal, respectively, and a fitting groove is provided on an upper surface of the base portion of the bobbin of the first electromagnetic unit; A bobbin of a second electromagnetic unit provided separately from the first electromagnetic unit is fitted in the fitting groove to integrate the bobbins of the two electromagnetic units, and the break contact terminal and the make contact terminal An electromagnetic relay, wherein the break contact terminal and the make contact terminal are respectively supported by the terminal support portions such that a horizontal portion faces in parallel at a predetermined interval. 2. The iron core supporting member according to claim 1, wherein the terminal supporting portion has an iron core supporting member extending in a horizontal direction, and the iron core has a flange wide portion at an upper end thereof. An electromagnetic relay, wherein a through-hole through which an iron core is inserted is provided, and an upper edge of the through-hole supports the upper end of the iron core into which the iron core is inserted.